Expounding Information: The heater core in my car ruptured. In the process of ripping one out of another vehicle, I was amazed at how large the HVAC unit is. I resolved to source a more space efficient unit, which lead me to the Hurricane series units for hot rods. They have electrically-controlled units but I want to keep my stock HVAC controls.

I currently have an Erisin ES777A (piece of junk, BTW) installed to provide audio and navigation. For one thing, I find a 7" screen mounted low terrible for safe navigation. I'd like to have navigation directions right next to my gauges. Speaking of gauges, I also want to switch from the centralized speedometer to a large centralized tachometer. All of which suggests a switch to a digital cluster.

The new Tesla S is powered by two Tegra Visual Computing Modules. This is a pretty new device so there is almost no knowledge base or user resources for it. Nvidia has some nifty developer support, including software for building a custom user interface, but that's about it. It's also not anywhere near being "plug and play", even for the hobbyist tuner/hacker IMO. In the long run, however, I expect it to have far greater support than the ISIS system due to Nvidia's size as well as the number of OEM's looking into using the system.

The basic layout/aesthetic of my proposed dash is heavily inspired by the Lamborghini Gallardo, with the Pagani Huayra's pair of high-mounted central air vents.

All that being said:

1. Which systems is likely to be most cost-effective?
2. Which is likely to be easiest/most flexible to program?
3. Which should be easier to physically install for someone who isn't an electrician/electrical engineer?